问题补充:
I a worker, but now I am an actor.
A. used to be
B. used to being
C. was used to be
D. was used to being
答案:
(答案→)A. used to be
B. used to being
C. was used to be
D. was used to being
解析:本题的含义是我曾今是一名工人,但现在我是一名演员。在英文中used to+动词原形,可表示过去,意思为曾今,故本题选A。